Remove Fedora related code

Fedora is no longer supported by Origin Release 4 and was obviously never supported by OSE so lets excise the Fedora specific code paths to simplify our code base.

Ref: https://fedoraproject.org/wiki/OpenShift_Origin
Most of these variables can now be removed and the full paths used in their place where needed (though I think we are setting the Exec path in init.pp, so in reality, we should not need to use full paths for these binaries anyway.